340.5 g of sodium bromide To moles of sodium bromide

Answer: 3.3 moles

Explanation:

Sodium bromide has a chemical formula of NaBr.

Given that:

Mass of NaBr in grams = 340.5g

Number of moles of NaBr = ?

For Molar mass of NaBr, use atomic mass of sodium Na = 23g, bromine Br = 79.9g

So, molar mass of NaBr = (23g + 79.9g)

= 102.9g/mol

Recall that number of moles = (mass in grams/molar mass)

No. of moles = 340.5g/102.9g/mol

= 3.3 moles

Thus, 340.5 g of sodium bromide gives 3.3 moles of sodium bromide